265140436533655 has 16 divisors (see below), whose sum is σ = 327473417724768. Its totient is φ = 205958124288000.

The previous prime is 265140436533653. The next prime is 265140436533701. The reversal of 265140436533655 is 556335634041562.

It is not a de Polignac number, because 265140436533655 - 2¹ = 265140436533653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 265140436533655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265140436533653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3064809786 + ... + 3064896295.

It is an arithmetic number, because the mean of its divisors is an integer number (20467088607798).

Almost surely, 2^{265140436533655} is an apocalyptic number.

265140436533655 is a deficient number, since it is larger than the sum of its proper divisors (62332981191113).

265140436533655 is a wasteful number, since it uses less digits than its factorization.

265140436533655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6129706338.

The product of its (nonzero) digits is 116640000, while the sum is 58.

The spelling of 265140436533655 in words is "two hundred sixty-five trillion, one hundred forty billion, four hundred thirty-six million, five hundred thirty-three thousand, six hundred fifty-five".